Caterpillar 3406E/C15 2038823 Intake Rocker Arm PAI 392138CROSS REFERENCE: 2038823 203 8823 APPLICATION: Caterpillar 3406E C15 Multiple Use Application. BRAND: PAI 392138 Caterpillar 3406E C15 2038823 Intake Rocker Arm PAI 392138. Heavy duty and truck parts. Maintains stable intake valve transfer. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty truck parts industry. This part is built brand new